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279D3

The Cat® 279D3 Compact Track Loader, with its radial lift design, delivers impressive mid-lift reach and excellent digging performance with outstanding drawbar power. Its standard, suspended undercarriage system provides superior traction, flotation, stability and speed to work in a wide range of applications and underfoot conditions.
  • Standard Equipment
  • Optional Equipment
  • Specs

Standard Equipment

  • ELECTRICAL
    • 12 volt Electrical System
    • 80 ampere Alternator
    • Ignition Key Start/Stop Switch
    • Lights: Gauge Backlighting, Two Rear Tail Lights, Two Rear Halogen Working Lights, Two Adjustable Front Halogen Lights, Dome Light
    • Backup Alarm
    • Heavy Duty Battery, 850 CCA
  • OPERATOR ENVIRONMENT
    • Advanced Display with Rearview Camera: Full Color, 127 mm (5 in) LCD screen; Advanced Multi-operator Security System; On-screen Adjustments for Implement Response, Hystat Response, and Creep Control
    • Gauges: Fuel Level, Hour Meter
    • Operator Warning System Indicators: Air Filter Restriction, Alternator Output, Armrest Raised/Operator Out of Seat, Engine Coolant Temperature, Engine Oil Pressure, Glow Plug Activation, Hydraulic Filter Restriction, Hydraulic Oil Temperature, Park Brake Engaged, Engine Emission System
    • Adjustable Vinyl Seat
    • Fold In Ergonomic Contoured Armrest
    • Control Interlock System, when operator leaves seat or armrest raised: Hydraulic System Disables, Hydrostatic Transmission Disables, Parking Brake Engages
    • ROPS Cab, Open, Tilt Up
    • FOPS, Level I
    • Top and Rear Windows
    • Floor Mat
    • Interior Rearview Mirror
    • 12 volt Electric Socket
    • Horn
    • Hand (Dial) Throttle, Electronic
    • Adjustable Joystick Controls
    • Anti-theft Security System with 6-button Keypad
    • Storage Compartment with Netting
  • POWER TRAIN
    • Cat C3.3B, Turbo Diesel Engine, Meeting Tier 4 Final and Stage V Emission Standards
    • Air Cleaner, Dual Element, Radial Seal
    • S·O·SSM Sampling Valve, Hydraulic Oil
    • Filters, Cartridge-type, Hydraulic
    • Filters, Canister-type, Fuel and Water Separator
    • Radiator/Hydraulic Oil Cooler (side-by-side)
    • Spring Applied, Hydraulically Released, Wet Multi Disc Parking Brakes
    • Hydrostatic Transmission, Two Speed Travel
    • Suspension – Independent Torsion Axles (4)
  • OTHER
    • Engine Enclosure, Lockable
    • Extended Life Antifreeze, –37° C (–34° F)
    • Machine Tie Down Points (6)
    • Support, Lift Arm
    • Hydraulic Oil Level Sight Gauge
    • Radiator Coolant Level Sight Gauge
    • Radiator, Expansion Bottle
    • Cat ToughGuard™ Hose
    • Auxiliary, Hydraulics, Continuous Flow
    • Heavy Duty, Flat Faced Quick Disconnects with Integrated Pressure Release
    • Split D-Ring to Route Work Tool Hoses Along Side of Left Lift Arm
    • Electrical Outlet, Beacon
    • Belly Pan Cleanout
    • Variable Speed Demand Fan
    • Product Link™ PL240, Cellular
  • MANDATORY EQUIPMENT
    • Hydraulics, Standard or High Flow XPS
    • Quick Coupler, Mechanical or Powered
    • High Visibility Seat Belt, 50 mm (2 in) or 75 mm (3 in)
    • Steel Imbed Rubber Track – 400 mm (15.7 in) or 450 mm (17.7 in)
    • Dual Flange Front Idler/Single Flange Rear Idler or Triple Flange Front/Rear Idlers
    • PERFORMANCE PACKAGES:
      – Performance Package H1: Standard Flow Hydraulics (No Self Level)
      – Performance Package H2: Standard Flow Hydraulics, Dual Direction Electronic Self Level (Raise and Lower), Work Tool Return to Dig, Work Tool Positioner, and Electronic Snubbing (Raise and Lower)
      – Performance Package H3: High Flow XPS, Dual Direction Electronic Self Level (Raise and Lower), Work Tool Return to Dig, Work Tool Positioner, and Electronic Snubbing (Raise and Lower)
    • COMFORT PACKAGES:
      – Open ROPS (C0): Static Seat (No Foot Throttle, Headliner, Heater or Door)
      – Open ROPS (C1): Foot Throttle, Headliner, Cup Holder, and choice of Seat (Mechanical Suspension or High Back, Heated, Air Ride Seat) (No Heater or Door)
      – Enclosed ROPS with Heater (C2): Foot Throttle, Headliner, Heater and Defroster, Side Windows, Cup Holder, Radio Ready, choice of Seat (Mechanical Suspension or High Back, Heated, Air Ride Seat) and Door (Glass or Polycarbonate)
      – Enclosed ROPS with A/C (C3): C2 + Air Conditioner

Optional Equipment

  • OPTIONAL EQUIPMENT
    • Hand-Foot Style Controls
    • External Counterweights
    • Beacon, Rotating
    • Engine Block Heater – 120V
    • Oil, Hydraulic, Cold Operation
    • Paint, Custom
    • Heavy Duty Battery, 1,000 CCA
    • Product Link PL641, Cellular
    • Speed Sensitive Ride Control
    • Bluetooth® Radio with Microphone (AM/FM/Weather Band Receiver with USB and Auxiliary Input Jack)

Specs

Overview

Long Name:
279D3 Compact Track Loader
Name:
279D3
Brand:
Caterpillar
Status:
Current

Engine

Gross Power - SAE J1995:
74.3 HP / 55.4 kW

Operating Specifications

Rated Operating Capacities - 35% Tipping Load:
2220 lb / 1010 kg

Weights

Operating Weight:
10095 lb / 4579 kg

Dimensions

Length - Track on Ground:
64.2 in / 1630 mm
Overall Length - Track:
83.8 in / 2129 mm
Height - Top of Cab:
83.2 in / 2113 mm
Ground Clearance:
8.9 in / 226 mm
Departure Angle:
32°
Maximum Dump Angle:
39°
Bucket Pin Height - Carry Position:
7.8 in / 198 mm
Turning Radius from Center - Machine Rear:
70.7 in / 1796 mm
Turning Radius from Center - Coupler:
55.5 in / 1410 mm
Maximum Overall Height:
159.5 in / 4051 mm
Maximum Reach - With Arms Parallel to Ground:
54 in / 1373 mm
Turning Radius from Center - Bucket:
88.8 in / 2256 mm
Bucket Pin Height - Maximum Lift:
124.9 in / 3173 mm
Length - With Bucket on Ground:
146.2 in / 3714 mm
Length - Without Bucket:
117.9 in / 2995 mm
Reach - Maximum Lift/Dump:
22.6 in / 575 mm
Note:
Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).
Clearance at Maximum Lift and Dump:
97.8 in / 2485 mm
Vehicle Width (450 mm/17.7 in tracks):
78 in / 1981 mm
Rack Back Angle - Maximum Height:
84°

Hydraulic System

Hydraulic Flow - Standard - Loader Hydraulic Pressure:
3335 psi / 23000 kPa
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Flow:
32 gal/min / 121 l/min
Hydraulic Flow - Standard - Loader Hydraulic Flow:
23 psi / 86 kPa
Hydraulic Flow - Standard - Hydraulic Power (Calculated):
44 HP / 33 kW
Hydraulic Flow - High Flow XPS - Maximum Loader Hydraulic Pressure:
4061 HP / 28000 kW
Hydraulic Flow - High Flow XPS - Hydraulic Power (Calculated):
76 psi / 57 kPa

Cab

ROPS:
ISO 3471:2008
FOPS:
ISO 3449:2005 Level I

Power Train

Travel Speed - Forward or Reverse - Two Speed:
8.3 mile/h / 13.3 km/h
Travel Speed - Forward or Reverse - One Speed:
4.5 mile/h / 7.2 km/h

Service Refill Capacities

Hydraulic System:
13.7 gal (US) / 52 l
Hydraulic Tank:
10.3 gal (US) / 39 l
Fuel Tank:
27.7 gal (US) / 105 l
Engine Crankcase:
3 gal (US) / 11 l
Cooling System:
3.7 gal (US) / 14 l

Air Conditioning System (if equipped)

Air Conditioning:
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.

Engine

Net Power - SAE 1349:
72.9 HP / 54.4 kW
Displacement:
203 in³ / 3.3 l
Bore:
3.7 in / 94 mm
Stroke:
4.7 in / 120 mm
Peak Torque - 1,500 rpm - SAE J1995:
195 ft·lbf / 265 N·m
Net Power:
72.9 HP / 54.4 kW
Gross Power:
74.3 HP / 55.4 kW
Engine Model:
Cat C3.3B DIT (turbo)
Net Power - ISO 9249:
73.7 HP / 54.9 kW

Operating Specifications

Tipping Load:
6345 lb / 2885 kg
Breakout Force - Tilt Cylinder:
7285 lb / 3304 kg
Rated Operating Capacities - 50% Tipping Load:
3170 lb / 1445 kg
Ground Contact Area - With 450 mm/17.7 in Track:
2272 in² / 1.47 m²
Note:
Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).
Rated Operating Capacity with Optional Counterweight:
3390 lb / 1540 kg
Ground Pressure - With 450 mm/17.7 in Track:
4.4 psi / 30.4 kPa

Weights

Note:
Operating Weight, Operating Specifications and Dimensions all based on 75 kg (165 lb) operator, all fluids, two speed, OROPS, 2036 mm (80 in) low profile bucket, 400 mm (15.7 in) tracks, dual flange front idler/single flange rear idler, standard flow hydraulics, mechanical suspension seat, no optional counterweights and manual quick coupler (unless otherwise noted).

Noise Level

Note (2):
**The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.
Outside Cab***:
103 dB(A) / 103 dB(A)
Note (3):
***The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.
Inside Cab**:
83 dB(A) / 83 dB(A)
Note (1):
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.